This adds a file that was missed in r26134 (adds support for Cross Memory

Attach). It is a header file that contains syscall defs for process_vm_readv
and process_vm_writev. It is only used on systems where glibc does not yet
have support for the new syscalls and where --with-cma has been passed 
to configure. The syscall numbers are hardcoded but have been in a released
kernel and so will not change in the future

Once all linux distros have the new glibc this file can be removed.

This commit was SVN r26615.

The following SVN revision numbers were found above:
  r26134 --> open-mpi/ompi@524de80eaa

opal/include/opal/sys/cma.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2011-2012      IBM Corporation.  All rights reserved.
+ *
+ */
+
+/** @file
+ *
+ * Cross Memory Attach syscall definitions. 
+ *
+ * These are only needed temporarily until these new syscalls 
+ * are incorporated into glibc
+ */
+
+#ifndef OPAL_SYS_CMA_H
+#define OPAL_SYS_CMA_H 1
+
+#include "opal_config.h"
+
+#include "opal/sys/architecture.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <sys/unistd.h>
+#endif
+
+#ifdef __linux__
+
+/* Cross Memory Attach is so far only supported under linux */
+
+#if OPAL_ASSEMBLY_ARCH == OMPI_AMD64
+#define __NR_process_vm_readv 310
+#define __NR_process_vm_writev 311
+#elif OPAL_ASSEMBLY_ARCH == OMPI_IA32
+#define __NR_process_vm_readv 347
+#define __NR_process_vm_writev 348
+#elif OPAL_ASSEMBLY_ARCH == OMPI_IA64
+#define __NR_process_vm_readv 1332
+#define __NR_process_vm_writev 1333
+#elif OPAL_ASSEMBLY_ARCH == OMPI_POWERPC32
+#define __NR_process_vm_readv 351
+#define __NR_process_vm_writev 352
+#elif OPAL_ASSEMBLY_ARCH == OMPI_POWERPC64
+#define __NR_process_vm_readv 351
+#define __NR_process_vm_writev 352
+#else
+#error "Unsupported architecture for process_vm_readv and process_vm_writev syscalls"
+#endif
+
+
+inline ssize_t process_vm_readv(pid_t pid, 
+                                const struct iovec  *lvec, 
+                                unsigned long liovcnt,
+                                const struct iovec *rvec,
+                                unsigned long riovcnt,
+                                unsigned long flags)
+{
+  return syscall(__NR_process_vm_readv, pid, lvec, liovcnt, rvec, riovcnt, flags);
+}
+
+inline ssize_t process_vm_writev(pid_t pid, 
+                          const struct iovec  *lvec, 
+                          unsigned long liovcnt,
+                          const struct iovec *rvec,
+                          unsigned long riovcnt,
+                          unsigned long flags)
+{
+  return syscall(__NR_process_vm_writev, pid, lvec, liovcnt, rvec, riovcnt, flags);
+}
+
+#endif /* __linux__ */
+
+#endif /* OPAL_SYS_CMA_H */